727 yoke question

do they make the 7260 or the 7290 yoke with the splines all the way to the end of the yoke. I noticed mine has the splines stop about an inch or more from the end. I think Lance aid he dad one that had them all the way out. Is this an item that is aftermarket and can you get them today. If you know can you tell me where to get one. and the next question is why does the splines not come all the way out. Is there a reason for it. I will be needing a yoke soon and was thinking about maybe getting one. Thanks